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ABSA 4TH CLASS PART A REVIEW QUESTIONS WELL ANSWERED.
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ABSA 4TH CLASS PART A REVIEWQUESTIONS WELL ANSWERED.
When applying to write a Power Engineer certificate of competency examination, the candidate must:
Select one:
a. Undergo mandatory drug testing
b. Hold the next lower class of qualification
c. Pass a criminal records check
d. Pass both a written and oral examination ANS - b. Hold the next lower class of qualification
A machine lifts a load of 12kN with an applied effort of 4kN. What distance will the load move if the
effort moves a distance of 8m and the efficiency of the machine is 70%?
Select one:
a. 0.54 m
b. 3.81 m
c. 1.87 m
d. 0.38 m ANS - c. 1.87 m
Which of these is the "Mechanical Refrigeration Code"?
Select one:
a. ASME MRC
b. CSA B51.
c. CSA B52.
d. ASME Section I. ANS - c. CSA B52.
,In order to ensure safe and continuous operation of a pressure reducing valve, the valve station should
have _________________.
Select one:
a. A safety valve on the high-pressure side
b. A bypass line, plus a safety valve and pressure gauge on the low-pressure side
c. Thermometers on the inlet and outlet piping
d. A strainer immediately downstream of the valve ANS - b. A bypass line, plus a safety valve and
pressure gauge on the low-pressure side
If the power dissipated by a resistor is 1.2 kW when supplied with 110 V, the amperage will be _____ A.
Select one:
a. 91.666
b. 19.006
c. 10.91
d. 132 ANS - c. 10.91
The inclined "U" tube manometer:
Select one:
a. Will measure pressure in MPa
b. Can only be used with mercury
c. Is more accurate than the "U" tube manometer
d. Is more difficult to read than the U-tube manometer ANS - c. Is more accurate than the "U" tube
manometer
A valve which gives good throttling action, takes less actuator force, but does not seal well is a: Select
one:
a. Double seated valve
b. Reverse acting valve
c. Single seated valve
d. Direct acting valve ANS - a. Double seated valve
,The main component of any computer is the:
Select one:
a. Keyboard
b. Screen
c. Memory
d. Central processing unit ANS - d. Central processing unit
In most sizes of pipe, Schedule 40 corresponds to _____ wall thickness. Select one:
a. Welded only
b. Threaded only
c. Extra strong (XS)
d. Standard ANS - d. Standard
A reducing agent or fuel could be:
Select one:
a. Carbon monoxide
b. A heavy metal oxide
c. Hydrogen peroxide
d. Concentrated Sulphuric acid ANS - a. Carbon monoxide
A control device which will change one form of energy into another form of energy is the: Select one:
a. Logic device
b. Primary element
c. Transducer
d. Transmitter ANS - c. Transducer
The __________ valve requires specific and routine lubrication.
Select one:
, a. Butterfly
b. Globe
c. Check
d. Tapered plug ANS - d. Tapered plug
With reference to scalars and vectors, a space diagram:
Select one:
a. Shows the relationship of time to the vector.
b. Illustrates a system of vectors.
c. Shows the relationship of the scalar to the vector.
d. Illustrates a system of scalars. ANS - b. Illustrates a system of vectors
Brass and bronze are alloys of:
Select one:
a. iron
b. copper
c. aluminum
d. lead ANS - b. copper
PLC's for Burner Management Systems can:
Select one:
a. Have limited field configurations
b. Be used without any field testing
c. Be set up by technicians at burner repair companies
d. Be programmed by operators ANS - a. Have limited field configurations
Which is the workers responsibility?
Select one:
a. Co-operating with others on workplace safety and health
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